  public function executeCartDelete(sfWebRequest $request)
  {
    $id = $request->getParameter('id');

    $this->configuration->setCartItems(array_diff($this->configuration->getCartItems(), array($id)));

    $this->getUser()->setFlash('notice', 'The item was deleted successfully from cart.');

    $this->redirect(sfContext::getInstance()->getModuleName().'/cartIndex');
  }
